JP2007176114A - Roll apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To facilitate the operations for mounting and demounting an embossing roll. <P>SOLUTION: In an embossing apparatus provided with an embossing roll 1 and 2 and a frame for supporting them, the frame is constructed by a fixed frame 12a and a movable frame 12b mounted to be transferred to the fixed frame 12a which is constructed such as the frame is released by transfer of the movable frame 12b, the embossing roll 1 and 2 are taken outside of the apparatus from mounted positions in the frame by the part released is by using the released part as a pass way 18 or the embossing roll 1 and 2 are brought from the outside of the apparatus and mounted to the mounting positions. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a roll apparatus provided with a roll such as an embossing apparatus.

  Conventionally, in the processing process of household paper (the stage of obtaining a final product such as toilet paper or kitchen paper by rewinding a large sized base paper roll), (a) the paper strength is reduced and softened by damaging the base paper (B) Increase the smoothness by reducing the contact area of the product surface, (c) Increase the thickness feeling by the level difference of the unevenness, (d) Air by interposing the base paper with the unevenness Embossing is performed according to the purpose, such as providing a layer to increase the amount of water absorption / oil absorption, or (e) providing design.

  6 to 8 show an outline of a conventional tip-to-tip embossing device. This device embosses each of the two base papers P1 and P2, and then bonds them so that the apex and apex of the embossing face each other. Embossing is applied to toilet paper and kitchen paper. It is often used to

  More specifically, a pair of embossing rolls 101 and 102 having a concavo-convex pattern on the surface are arranged side by side, and an elastic material such as rubber is attached to the upper surface of each embossing roll 101 and 102. Rubber rolls 103 and 104 are provided. The rubber rolls 103 and 104 have support shafts 104d protruding from both end faces, and the support shafts 104d are attached to the rubber roll frames 103b and 104b via bearings 104c. The rubber roll frames 103b and 104b are attached to the frame 112 via support shafts 103a and 104a and a bearing 104e, and are swung by a cylinder 107. The rubber roll frames 103b and 104b are swung by the cylinder 107, and the rubber rolls 103 and 104 pivotally supported by the rubber roll frames 103b and 104b are pressed against the surfaces of the emboss rolls 101 and 102.

  The two base papers P1 and P2 are conveyed through individual paths, and are supplied between the embossing roll 101 and the rubber roll 103 and between the other embossing roll 102 and the rubber roll 104, respectively. After a concavo-convex pattern corresponding to the pattern on the surfaces of 101 and 102 is formed, it is supplied and bonded between the embossing rolls along the outer peripheral surface of the embossing rolls 101 and 102 as they are. At this time, the glue is transferred from the gluing roll 111 to only the apex portion of the concavo-convex pattern with respect to the base paper P2 on the outer peripheral surface of the other embossing roll 102, and then pinched between both the embossing rolls 101 and 102, The parts are bonded together. Reference numeral 108 denotes a glue receiver, and the glue stored in the glue receiver 108 is pumped up by the pump-up roll 109 and then transferred to the glue roll 111 through the plating roll 110 and used. The processed paper thus obtained is conveyed to a product winding unit (not shown) and wound.

  The embossing rolls 101 and 102 have support shafts 101a and 102a protruding from both end faces, and the support shafts 101a and 102a are supported by a frame 112 via bearings 101b and 102b. A driven timing pulley 102d and a driving gear 102c are attached to the support shaft 102b of one embossing roll 102, and the driven timing pulley 102d is connected to a driving timing pulley 121 attached to the rotating shaft of the motor 120 via the timing belt B. It is connected. A driven gear 101c is attached to the support shaft of the other embossing roll 101, and a driving gear 102c is engaged with the driven gear 101c. When the motor 120 is operated, the power is transmitted to one embossing roll through the driving timing pulley, the timing belt and the driven timing pulley, and is also transmitted to the other embossing roll through the driving gear and the driven gear, Both embossing rolls 101 and 102 are rotationally driven. If the embossing rolls 101 and 102 have the same diameter and the drive gears 101c and 102c have the same number of teeth, the embossing rolls 101 and 102 are driven to rotate at the same speed, and the timing of the uneven pattern does not shift. On the other hand, since the rubber rolls 103 and 104 are pressed against the surfaces of the embossing rolls 101 and 102 by the cylinder 107, the rubber rolls 103 and 104 are reversely rotated by surface friction as the embossing rolls rotate.

  In addition to such an embossing device, various roll devices are used in the manufacture of paper products and nonwoven fabric products such as a calendar device, a dryer device, a coating device, and the like.

  And in such a roll apparatus, in order to perform repair and replacement | exchange of a roll, removing a roll from an apparatus or attaching to an apparatus is performed. In particular, in an embossing device, when changing an embossing pattern by switching product types or the like, it is generally performed to remove an embossing roll from the device and attach an embossing roll of another pattern, that is, to replace the embossing roll ( Patent Document 1).

  However, the conventional roll apparatus has a problem that the work of attaching and detaching the roll is extremely complicated.

  For example, when the embossing roll is replaced in the above-described embossing device, first, the gluing unit in which the gluing receiver 108, the pumping roll 109, the plating roll 110, and the gluing roll 111 are integrated is separated from the embossing roll 102. Next, the cylinder 107 is operated, the rubber roll mounting frames 103b and 104b are rotated around the fulcrums 103a and 104a, and the rubber rolls 103 and 104 are separated from the embossing rolls 101 and 102. Next, the embossing roll 101 is separated from the embossing roll 102. Here, prior to lifting the embossing rolls 101, 102, rubber rolls 103, 104, paper rolls 105, 105, expander rolls 106, 106, etc. installed on the top of the embossing rolls 101, 102 are obstructed during removal. Remove the obstacle that becomes. Further, the driven timing pulley 102d is released from the driving means, the driven timing pulley 102d is removed from the support shaft 102a of the embossing roll 102, and the driving gears 101c and 102c are removed from the shafts 101a and 102a of the embossing rolls 101 and 102. Thereafter, the embossing rolls 101 and 102 are lifted and removed by a hoist or the like. When attaching the embossing rolls 101 and 102, the procedure is reversed.

  As can be seen from this work, when the target roll is installed in the inner part (lower part, etc.) of the device, when removing the roll, internal devices such as other rolls located outside the roll were removed in order. Later, the target roll must be replaced (hereinafter also referred to as the first problem).

  In addition, when a power transmission vehicle such as a drive gear or a timing pulley is attached to the roll, a complicated work of removing these power transmission vehicles is required when removing the roll (hereinafter, the second operation is performed). Also called a problem).

  In order to solve this second problem, the drive gear mounted on the rotating shaft of the roll is mounted on the driving shaft provided in the apparatus main body, and the rotating shaft and the driving shaft of the roll are gear-coupled. It has also been proposed that the rolls can be detachably connected to facilitate the work of replacing the rolls (see Patent Document 1).

  However, if a gear coupling is interposed, the rotation is likely to be shifted. Especially when embossed patterns of two sheets of paper, such as tip-to-tip and nested, are combined, there is a possibility that the pattern will be shifted at the time of bonding. . There is also a problem that the shaft length is increased by the amount of the gear coupling and the apparatus is enlarged.

On the other hand, considering only the simplification of the roll replacement work accompanying the pattern change of the embossing roll, it may be possible to provide an embossing device for each type of embossing roll, but it is not realistic from the viewpoint of installation area and equipment cost. Or the work cannot be simplified in cases other than the pattern change such as repair.
Japanese Utility Model Publication No. 5-74830

  Then, the main subject of this invention is to make removal and attachment work of a roll easy.

The present invention that has solved the above problems is as follows.
<Invention of Claim 1>
In a roll device comprising a roll and a frame that supports the roll,
The frame includes a fixed frame and a movable frame attached to the fixed frame so as to be movable.
The frame is opened by the movement of the movable frame, and the roll is taken out from the mounting position in the frame to the outside of the apparatus, or the roll is brought into the mounting position in the frame from the outside of the apparatus and mounted using the open portion as a passage. Configured as
A roll apparatus characterized by that.

(Function and effect)
When configured in this way, even if the target roll is attached inside the apparatus, if the frame is opened by moving the movable frame, the built-in equipment such as other rolls located outside the roll is removed. Therefore, the target roll can be removed and attached, and the operation can be greatly facilitated.

<Invention of Claim 2>
The roll apparatus according to claim 1, wherein the roll is attached to the fixed frame.

(Function and effect)
Since the movable frame moves, it is not possible to completely avoid the positional shift accompanying the movement. Therefore, when the roll is attached to the movable frame, the position of the roll is easily shifted, and a complicated adjustment work is required. On the other hand, as described in this section, when the roll is attached to the fixed frame side, the frame is not displaced in principle, so that complicated adjustment work can be eliminated.

<Invention of Claim 3>
A built-in device different from the roll is attached to a position that becomes the passage in the movable frame, and the built-in device is moved to a position outside the passage in accordance with the movement of the movable frame. The roll device according to claim 1 or 2, wherein

(Function and effect)
Various restrictions are imposed on the device design, and even if the frame can be configured to be openable, another built-in device protrudes into the path formed by the open portion, making it impossible to remove and attach the roll. There may be a case. The invention described in this section solves such a problem, and the built-in device provided at the position that becomes the passage when the frame is opened is attached to the movable frame, and when the frame is opened, the movable frame moves outside the passage along with the movement of the movable frame. By retracting, the built-in device does not obstruct the removal and attachment of the roll. Therefore, a compact and simple device structure can be obtained.

<Invention of Claim 4>
The roll device according to claim 3, wherein the built-in device is another roll pressed against the roll.

(Function and effect)
Other rolls that are in pressure contact with the target roll are placed in close proximity to the target roll and are particularly disturbing during removal and installation. Therefore, in such a case, it is preferable to attach the other roll to the movable frame.

<Invention of Claim 5>
A plurality of the rolls are arranged side by side, at least one roll is disposed so as to face the passage, and at least one other roll is disposed behind the roll facing the passage. The roll apparatus of any one of Claims 1-4 comprised so that the roll of the back may be taken out or attached in the state in which the roll which faces this was taken out.

(Function and effect)
When configured as described in this section, a plurality of rolls can be taken out and attached sequentially through a single passage, so that more rolls can be taken out and attached with a smaller frame opening amount. it can. Therefore, the installation area of the apparatus can be small.

<Invention of Claim 6>
The frame is configured such that one side and the bottom in the upper horizontal direction are the fixed frame, and the other upper side is the movable frame, and the lower end of the movable frame is orthogonal to both the vertical and horizontal directions. The movable frame is pivoted about the pivot shaft, whereby the movable frame and the fixed frame are separated from each other. The roll device according to claim 1, wherein the passage is formed by a portion.

(Function and effect)
With such a structure, the width of the lower part of the apparatus does not change, and the moving amount of the movable frame increases toward the upper part, so that the installation area of the apparatus can be reduced.

<Invention of Claim 7>
The roll has a support shaft projecting from both end faces of the roll and a power transmission vehicle attached to the support shaft, and the roll, the support shaft and the power transmission vehicle are integrated with each other to perform the removal and attachment to the frame. The roll device according to claim 1, configured as described above.

(Function and effect)
While preventing the occurrence of rotational misalignment, the roll, the support shaft and the power transmission vehicle can be taken out and attached as a whole without interposing power transmission means for generating rotational misalignment such as a gear cup rig. The roll can be easily removed and attached. The power transmission vehicle means a vehicle for transmitting power, such as a gear or a pulley.

<Invention of Claim 8>
The roll is a pair of embossing rolls, and a pair of sheets each provided with unevenness by each embossing roll is sandwiched between the embossing rolls, and the embossing rolls are fixed together. The roll apparatus of any one of Claims 1-7 attached to the flame | frame.

(Function and effect)
The invention described in this section is directed to an embossing device that bonds a pair of embossed sheets between both embossing rolls. In such an embossing device, the bonding position is displaced due to the displacement of the embossing roll. Therefore, as described in this section, it is preferable that both the embossing rolls are attached to the fixed frame instead of the movable frame.

<Invention of Claim 9>
A drive gear is attached to one of the embossing rolls,
A driven gear that meshes with the drive gear is attached to the other embossing roll,
The one embossing roll is configured to be removed and attached to the frame in a state integrated with the drive gear,
The other embossing roll is configured to take out and attach to the frame in an integrated state with the driven gear,
Marks are provided on each of the drive gear and the driven gear. Configured to fit the pattern,
The roll device according to claim 8.

(Function and effect)
As described in this section, when the embossing roll and each gear are integrally attached and detached, the positional relationship between the gear and the embossing roll is maintained, and the position in the rotational direction of both does not shift. And, assuming that this positional relationship is maintained, by providing a mark for pattern matching on each gear, when attaching the roll and the gear integrally, it is an easy task that only aligns the marks, so that both embossed rolls The handle can be matched to a predetermined positional relationship, for example, tip-to-tip or nested positional relationship.

  As described above, according to the present invention, there are advantages such as easy removal and attachment of the roll.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.
1 to 3 show a combination embossing device according to the present invention, and a pair of embossing rolls 1 and 2 having a concavo-convex pattern on the surface at the center in the vertical and horizontal directions of the frame 12 along the horizontal direction. It is installed side by side. Rubber rolls 3 and 4 having an elastic material such as rubber adhered to the surface are pressed against the upper surfaces of the embossing rolls 1 and 2 by a cylinder (not shown).

  The two base papers P1 and P2 are guided by the paper roll 5 and conveyed through individual paths. Then, after being expanded in the width direction by the expander rolls 6 and 6 in this conveyance process, between the embossing rolls 1 and 2 and the rubber rolls 3 and 4 and between the other embossing roll and the rubber roll. The concavo-convex pattern corresponding to the pattern on the embossing roll surface is formed.

  The base papers P1 and P2 to which the concavo-convex pattern is applied are supplied and bonded between the embossing rolls as they are along the outer peripheral surface of the embossing rolls. At this time, the glue is transferred from the gluing roll 11 to only the top of the convex portion of the concavo-convex pattern with respect to the base paper on the outer peripheral surface of one embossing roll. Reference numeral 15 denotes a doctor chamber. The glue circulating in the doctor chamber 15 is transferred to the surface of the anilox roll 14, adjusted to a required amount by a doctor blade (not shown), transferred to the glue roll 11 and used. The Thereafter, the glued both papers P1, P2 are bonded together by being sandwiched between both embossing rolls. In the case of tip-to-tip embossing, bonding is performed by passing between the embossing rolls 1 and 2, and in the case of nested embossing, bonding is performed by passing between the embossing roll 1 and the marriage roll 13 pressed against the embossing roll 1. The processed paper thus obtained is conveyed to a product winding unit (not shown) and wound.

  On the other hand, the frame 12 has a fixed frame 12a on one side and a lower side in the upper side, and a movable frame 12b on the other side. The lower end of the movable frame 12b has a vertical direction and a horizontal direction (see FIG. 1 is supported by the fixed frame 12a via a rotating shaft 12c that is orthogonal to both of them. Further, a cylinder 16 is provided for rotating the movable frame 12b around the rotation shaft 12c so as to approach and separate from the fixed frame 12a.

  Both embossing rolls 1 and 2 have support shafts 1a and 2a projecting from both end surfaces, and both support shafts 1a and 2a are supported by bearings 1b and 2b that are detachably provided at the upper end of the fixed frame 12a. Has been. Therefore, both embossing rolls can be removed integrally with the bearings 1b and 2b above the fixed frame 12a. In this way, by attaching both the embossing rolls 1 and 2 to the fixed frame 12a, it is possible to eliminate the positional deviation due to the movement of the frame.

  The rubber roll 3 for guiding one base paper P1 has a support shaft 3d protruding from both end faces, and this support shaft 3d is attached to the fixed frame 12a via a bearing 3c above the embossing roll 1, and the other The rubber roll 4 for guiding the base paper P2 has a support shaft 4d protruding from both end faces, and the support shaft 4d is attached to the movable frame 12b via a bearing 4c above the embossing roll 2.

  Furthermore, the paper roll 5 and the expander roll 6 that guide one base paper P1, and the gluing roll 11, the anilox roll 14, and the marriage roll 13 are attached to the fixed frame 12a via a bearing (not shown), etc. The paper roll 5 and the expander roll 6 for guiding the base paper P2 are attached to the movable frame 12b via a bearing or the like (not shown).

  These rolls are attached so that their positions can be adjusted, and some of the rolls such as rubber rolls 3 and 4 are provided with a cylinder (not shown) for positioning, press contact, and the like.

  A driven timing pulley 1d and a driving gear 1c are attached to the support shaft 1b of one embossing roll 1, and the driven timing pulley 1d is attached to a driving timing pulley 21 attached to the rotating shaft of the motor 20 via a timing belt B. It is connected. A driven gear 2c is attached to the support shaft of the other embossing roll 2, and a drive gear 1c is engaged with the driven gear 2c. In addition, in the state which matched the pattern of both the embossing rolls 1 and 2 to the predetermined positional relationship, for example, the positional relationship of tip-to-tip or nested, a mark is provided for each of the driving gear 1c and the driven gear 2c. It is preferable to leave.

  When the motor 20 is operated, the power is transmitted to one embossing roll 1 via the drive timing pulley 21, the timing belt B and the driven timing pulley 1d, and the other embossing via the driving gear 1c and the driven gear 2c. Also transmitted to the roll 2, both the embossed rolls 1 and 2 are driven to rotate. If both the embossing rolls 1 and 2 have the same diameter and the drive gears 1c and 2c have the same number of teeth, the both embossing rolls 1 and 2 are rotationally driven at the same speed, and the timing of the uneven pattern does not shift. On the other hand, since the rubber rolls 3 and 4 are pressed against the surfaces of the embossing rolls 1 and 2 by a cylinder (not shown), the rubber rolls 3 and 4 are driven to reversely rotate due to surface friction as the embossing rolls rotate.

Next, the removal and attachment of the embossing roll in the apparatus described above will be described with reference to the schematic diagram of FIG.
When taking out the embossing roll, first, a cylinder (not shown) is operated, and the gluing unit in which the gluing roll 11, the anilox roll 14 and the doctor chamber 15 are integrated is separated from the embossing roll 1, and another cylinder (not shown) is operated. Then, the rubber rolls 3 and 4 are separated from the embossing rolls 1 and 2. Further, another cylinder is operated to separate the embossing roll 2 from the embossing roll 1. When the marriage roll 13 is provided, the cylinder 17 is operated to separate the marriage roll 13 from the embossing roll 1.

  Thereafter, the frame 12 is opened as shown in FIG. That is, the cylinder 16 is contracted, the movable frame 12b is rotated about the rotation shaft 12c, the movable frame 12b and the fixed frame 12a are separated from each other, and the embossing rolls 1 and 2 are extracted between them. A passage 18 (for example, about 500 mm) necessary for the above is formed.

  The rubber roll 4 on the other side is attached to a position that becomes the passage 18 in the movable frame 12b before opening, but is moved to a position outside the passage 18 with the movement of the movable frame 12b. It will not be an obstacle.

  Subsequently, when the passage 18 is formed, the timing belt is removed from the driven timing pulley 1d and released from the driving source, and the driven timing pulley 1d, the driving gears 1c and 2c, and the bearings 1b and 2b are connected to the embossing roll 1, The embossing rolls 1 and 2 are lifted by a hoist or the like while being attached to the shafts 1a and 2a of 2, and taken out of the apparatus. At this time, it is not necessary to remove the built-in devices other than the embossing rolls 1 and 2 from the frame 12.

  In particular, in the illustrated embodiment, the other embossing roll 2 is disposed so as to face the passage 18, but one embossing roll 1 is disposed behind the other embossing roll 2 when viewed from the passage 18 side. Therefore, after first taking out the other embossing roll 2 facing the passage as shown in FIG. 4 (b), the one embossing roll 1 is taken out or attached through the empty space as shown in FIG. 4 (c). Do. Although this form seems inconvenient at first glance, since a plurality of rolls 1 and 2 can be taken out and attached sequentially through a single passage 18, it can be handled with a smaller frame opening amount, and the installation area of the apparatus is also small. There is an advantage that can be done.

  When the embossing rolls 1 and 2 are attached, the embossing rolls 1 and 2 can be brought into the attachment position in the frame 12 from the outside of the apparatus and can be performed in the reverse procedure. In particular, when a mark is provided on each of the drive gear 1c and the driven gear 2c, when the embossing rolls 1 and 2 and the gears 1c and 2c are attached integrally, it is an easy task of just matching the marks. The patterns of both embossing rolls can be matched to a predetermined positional relationship, for example, tip-to-tip or nested positional relationship.

  Thus, even though the embossing rolls 1 and 2 are attached to the inside of the apparatus, the frame 12 is opened by the movement of the movable frame 12b to form a passage, so that the embossing rolls 1 and 2 are positioned outside the embossing rolls 1 and 2. Thus, the embossing rolls 1 and 2 can be removed and attached without removing other built-in devices, and the operation can be greatly facilitated.

(Other)
The moving form of the movable frame 12b is not limited to the above embodiment, and any moving form can be adopted as long as the passage 18 is formed. That is, as shown in FIG. 5 (a), the lower part of the frame is a fixed frame 12a, both sides of the upper part are movable frames 21b and 12b, respectively, and the lower part is pivoted about a fulcrum, and the upper part of the frame opens left and right. Thus, as shown in FIG. 5B, the movable frame 12b is translated (slided) along the rail 19 in the lateral direction (up-down direction or front-rear direction). As shown in FIG. 5 (c), the movable frame 12b is rotated about the support shaft 12c at the upper part of the frame 12 to form the passage 18, and the like is appropriately formed. Can do.

  The present invention can be applied to a wide range of applications without particular limitation as long as it is a device equipped with a roll, such as an embossing device, a calendar device, a dryer device, a coating device, a roll device used in the manufacture of paper products and nonwoven fabric products, etc. It is.

It is a front view of an embossing device. It is a right view which shows the principal part of an embossing apparatus. It is a top view which shows the principal part of an embossing apparatus. It is the schematic which shows the removal procedure of an embossing roll. It is the schematic which shows the various movement forms of a movable frame. It is a front view of the conventional embossing apparatus. It is a right view which shows the principal part of the conventional embossing apparatus. It is a top view which shows the principal part of the conventional embossing apparatus.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1,2 ... Embossing roll, 3, 4 ... Rubber roll, 12 ... Frame, 12a ... Fixed frame, 12b ... Movable frame.

Claims (9)

In a roll device comprising a roll and a frame that supports the roll,
The frame includes a fixed frame and a movable frame attached to the fixed frame so as to be movable.
The frame is opened by the movement of the movable frame, and the roll is taken out from the mounting position in the frame to the outside of the apparatus, or the roll is brought into the mounting position in the frame from the outside of the apparatus and mounted using the open portion as a passage. Configured as
A roll apparatus characterized by that.   The roll apparatus according to claim 1, wherein the roll is attached to the fixed frame.   A built-in device different from the roll is attached to a position that becomes the passage in the movable frame, and the built-in device is moved to a position outside the passage in accordance with the movement of the movable frame. The roll device according to claim 1 or 2, wherein   The roll device according to claim 3, wherein the built-in device is another roll pressed against the roll.   A plurality of the rolls are arranged side by side, at least one roll is disposed so as to face the passage, and at least one other roll is disposed behind the roll facing the passage. The roll apparatus of any one of Claims 1-4 comprised so that the roll of the back may be taken out or attached in the state in which the roll which faces this was taken out.   The frame is configured such that one side and the bottom in the upper horizontal direction are the fixed frame, and the other upper side is the movable frame, and the lower end of the movable frame is orthogonal to both the vertical and horizontal directions. The movable frame is pivoted about the pivot shaft, whereby the movable frame and the fixed frame are separated from each other. The roll device according to claim 1, wherein the passage is formed by a portion.   The roll has a support shaft projecting from both end faces of the roll and a power transmission vehicle attached to the support shaft, and the roll, the support shaft and the power transmission vehicle are integrated with each other to perform the removal and attachment to the frame. The roll device according to claim 1, configured as described above.   The roll is a pair of embossing rolls, and a pair of sheets each provided with unevenness by each embossing roll is sandwiched between the embossing rolls, and the embossing rolls are fixed together. The roll apparatus of any one of Claims 1-7 attached to the flame | frame. A drive gear is attached to one of the embossing rolls,
A driven gear meshing with the drive gear is attached to the other embossing roll,
The one embossing roll is configured to be removed and attached to the frame in a state of being integrated with the drive gear,
The other embossing roll is configured to be removed and attached to the frame in a state integrated with the driven gear,
Marks are provided on each of the driving gear and the driven gear, and when the one embossing roll and the other embossing roll are attached, the driving gear and the driven gear are engaged with each other so that the markings are aligned. Configured to match the pattern,
The roll device according to claim 8.

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